Expansible band.



F. E. .YOUNGS.

EXPANSIBLE BAND.

APPUCATION FILED MAY 12, 1913.

1,138,695. Patented May 4, 1915.

W\TNE55E5 \HVEHTOR Q2; BY

ATTORNEY.

THE NORRIS PETERS c9, PHOTO-LITHQ, WASHINGTON. D. C.

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FRED ELLIOTT YOUNGS, 015 DETROIT, MICHIGAN, ASSIGNOR OF ONE-HALF TO JOHN W.

HUBBARD, OF DETROIT, MICHIGAN. V

EXPANSIBLE BAND.

Specification of Letters Patent.

Patented May 4:, 1915.

Application filed May 17, 1913. Serial No. 768,353.

To all whom it may concern Be it known that I, FRED E. YoUNGs, a

citizen of the United States, residing at Detroit, county of Wayne, State, of Michigan, have invented a certain new and usefulIm- :provementin Expansible Bands, and declare the following to be a full,clear, and

exact description of the same, such as will enable others skilledin the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to expansible bands and especially to an expansible band used to bind a diaphragm to a circular Wall.

The invention is hereinafter described and illustrated in an environment in which it finds practical employment; It is shown and described as used with a washing tool ora machine and serves not only to bind the pump diaphragm to the shell but also to carry the grating.

In the drawings :-Figure 1, is a vertical section of a washing tool. Fig. 2, isa detail of the means for expanding the band which holds the grating and binds against the diaphragm. Fig. 3, is an elevation of my tool, showing the connection in which it is used.

The main casing in which the vacuum is temporarily created to produce the sucking action is lettered a and comprises a shell of sheet metal which has a conical top and cylindrical side walls which are corrugated with indenting annular corrugations b and c. The lower end of the shell is turned up to form a bead d so as to give the shell a smooth strong edge. The top of the shell at the apex of the conical portion turns up into a short stack 6, into which tightly fits a hollow stem or guide 7. The lower end of the guide protrudes a short distance into the interior of the shell (1 and flares out at the end, as designated at g. Braces it connect the flared portion of the guide or hollow stem with the adjacent portions of the conical portion of the shell so as to rigidly support the depending guide .portion and to brace the flared portion against impact of the plunger-head to be described shortly. The opposite end of the hollow stem or guide 7 has a ferrule 71 fitted thereupon.

The moving member, which in its entirety will be termed the plunger, comprises a spin, .d ej which is preferably made f Wood and incased in a metallic sheathing 72 which flares out at its lower end into a cone Z. The bottom of this cone is closed by a plate of sheet metal which is bent over the edges of the cone and which is designated as m. The arm and the plate m form the plungerhead. The upper end of the spindle j is provided with a suitable handle 11. that cooperates with the ferrule z to limit the possible downward movement of the plunger. A ring 0 of soft material, such as felt, on gages about the conical end Z of the plunger at the point where it begins to flare. This serves to cushion the impact against the flaring end 9 of the hollow stem or guide 7.

The flexible diaphragm p, which is preferably constructed of rubber and cloth, is fastened to the plunger, by pinching the central portion of the diaphragm between the plate m and a second plate 9. This pinching is effected by driving the screw 1' into the end of the stem j. The edges ofthe diaphragm p are pinched between a band 8 and the side walls of the shell or at a location between the two indented annular corrugations b and 0. These corrugations serve to locate the band 8 which is tightened upon the diaphragm by the band-expander illustrated in Figs. 1 and 2 and which comprises a nut 25 and a block u, the latter being of the same size and contour as the nut. Both the block and nut are provided with a pair of oblique recesses. The obliquity of the recesses in the two opposed members (the nut and block) is not in the same direction but convergent toward the center of the spacing between the two members. A screw 11 is threaded into the nut t and passes through the block a so that by turning this, the two members can be made to approach or separate. The two meeting ends of the band are each cut so that the ends form Vs. This nut t and the block a in reality form a double wedge. The V terminations of the band fit into the oblique recesses of this double wedge member and by turning the screw, the nut and the block may be caused to approach each other and thereby force the band ends apart, enlarging the diameter of the band proportionately all around its circumference, so as to force the edge of the diaphragm between the two corrugations and hold it firmly in place and in air-tight relation with the shell. The ends of the band have to be bent slightly in, as

shown in Fig. 2 to engage with the nut and block. This band serves not only to pack the diaphragm into the shell, but also acts as a rim to hold the grating 00, the bars of which are soldered to the interior face of the band. It will be noted from the-showing in Fig. 1 that the grating hangs from the band in about the same relation and the same distance that the diaphragm is above the band when the plunger is in its uppermost position. This grating serves to keep the clothes from following the plunger and insures a recess in which a vacuum may be temporarily created to cause suction.

The operation of the device is simply to reciprocate the plunger vertically in the guide as indicated by the dotted line showing of Fig. 1. The downward stroke forces air and water in front of the diaphragm as it descends against the grating. This, of course, expels the substances that occupied that place and when the return stroke is completed, a temporary vacuum is created between the diaphragm and the grating and the atmospheric pressure tends to force the 'water into this vacuum and of course draws it with considerable force through the clothes. Inasmuch as the plunger does not fit tightly in its guide, the instrument works With ease and yet efficiently accomplishes the forcing action and the suction action. These two actions are carried on directly over the entire area of the shell so that the instrument covers a considerable portion of the washing at each placement.

What I claim is An eXpansible band, comprisinga band circular in form and provided with two ends cut-to a V-shape, a nut and a block each provided on two sides with an obliquelydisposed recess, into which recesses the V-shaped ends of the band fit, and a screw passing through the block and threaded into the nut for causing the block and nut to approach or separate, substantially as described.

In testimony whereof, I sign this specification in the presence of two witnesses.

FRED ELLIOTT YOUNGS.

Witnesses STUART C. BARNns, 1 AMELIA C. KoEHN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

